CN102964117A - Wide-temperature MnZn power ferrite material - Google Patents

Wide-temperature MnZn power ferrite material Download PDF

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Publication number
CN102964117A
CN102964117A CN2012103931010A CN201210393101A CN102964117A CN 102964117 A CN102964117 A CN 102964117A CN 2012103931010 A CN2012103931010 A CN 2012103931010A CN 201210393101 A CN201210393101 A CN 201210393101A CN 102964117 A CN102964117 A CN 102964117A
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sand milling
principal constituent
content
ferrite material
power ferrite
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吕东华
徐艳
杜阳忠
颜冲
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Hengdian Group DMEGC Magnetics Co Ltd
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Hengdian Group DMEGC Magnetics Co Ltd
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Abstract

The invention relates to the technical field of production of a MnZn power ferrite material, especially to a wide-temperature MnZn power ferrite material. The material is mainly composed of main components and auxiliary components, wherein the main components comprise ingredients: by mole percentage, 52.7 to 52.8 % of Fe2O3, 9.2 to 9.8 % of ZnO, and the balance being MnO; and the auxiliary components account for 0.505 to 0.685 % of the total weight of the main components and are composed of CaCO3, ZrO2, Nb2O5, SnO2 and Co2O. The material is low in loss characteristic within a temperature range of 25 to 140 DEG C, and high in Bs characteristic as well.

Description

Wide temperature MnZn power ferrite material
Technical field
The present invention relates to MnZn power ferrite material production technical field, particularly a kind of wide temperature MnZn power ferrite material.
Background technology
The MnZn power ferrite material of at present external main flow is all paid attention to the loss of a certain temperature spot aspect loss, PC44, PC47, the materials such as PC45, PC46 such as Japanese TDK company, external TDK company has developed the PC95 material, and Philips company has developed the 3C97 material.Although Japanese TDK company has announced the PC95 material, presses 25 ℃-100 ℃ loss lowlyer, the application of this material mainly still reduces idling consumption, is not suitable for for a long time working under 100 ℃ or higher temperature.Although Philips company has announced the 3C97 material, this material is lower at the scope internal loss of wide temperature, but the Bs of this material is lower, 100 ℃ Bs particularly, being about 410mT(1200A/m 10kHz) this has just limited the transmission efficiency under the efficient of the power delivery of this material, particularly high temperature.Above-mentioned materials is all limiting light, thin, the little development of electronic devices and components.
The disclosure of the Invention of CN102693802A a kind of wide temperature MnZn power ferrite material and preparation method thereof, formed by principal constituent and ancillary component, wherein, principal constituent and content are calculated as with oxide compound: Fe 2O 3Be that 52.1～52.6mol%, ZnO are 9～11.5mol%, MnO surplus; Ancillary component by principal constituent raw material gross weight is calculated as with oxide compound: CaCO 3, ZrO 2, Nb 2O 5, SnO 2And Co 2O 3, and Co 2O 3Raw material must be greater than 0.35wt%.This material temperature is lower 25 ℃ to 140 ℃ scope loss ratios, but Bs is on the low side.
Summary of the invention
The object of the invention is to overcome the deficiency that above-mentioned materials exists, a kind of wide temperature MnZn power ferrite material is provided, make it in the temperature range of 25 ℃ and 140 ℃, low loss characteristic be arranged, take into account simultaneously the characteristic of high Bs.
 
The technical solution adopted for the present invention to solve the technical problems is: a kind of wide temperature MnZn power ferrite material, formed by principal constituent and ancillary component, and the molar percentage of each component of wherein said principal constituent is: Fe 2O 3Be 52.7～52.8mol%, ZnO is 9.2～9.8mol%, the MnO surplus; Described ancillary component accounts for 0.505% ~ 0.685% of principal constituent gross weight, and described ancillary component is by CaCO 3, ZrO 2, Nb 2O 5, SnO 2And Co 2O 3Form.
The contriver studies discovery, CaCO 3, Nb 2O 5And ZrO 2Adding, can improve the resistivity of crystal boundary, reduce the power consumption of material, SnO 2Adding, can improve the resistivity of crystal grain inside, control simultaneously the size of crystal grain, improve the microtexture of material, Co 2O 3Adding can reduce the crystal anisotropy constant K of material 1, the magnetic hysteresis loss of reduction material.So what this group additive adopted is the resistivity that improves material, the K of control grain-size and reduction material 1Realize the purpose that reduces the wastage.
For principal constituent Fe 2O 3, ZnO and MnO will be controlled, and need to drop on Fe 2O 3Be that 52.7～52.8mol%, ZnO are in the scope of 9.2～9.8mol%, MnO surplus.If Fe 2O 3Content has surpassed the scope of the invention, can reduce the resistivity of material, improves the K of material 1Value, thereby eddy-current loss and the magnetic hysteresis loss of increase material.If Fe 2O 3Content is lower than this scope, can not effectively reduce the K of vectolite 2, be unfavorable for the reduction of material magnetic hysteresis loss.If ZnO content has surpassed the scope of the invention, be unfavorable for the raising of material B s, affect simultaneously Fe in the material 3O 4Generation, improve the magnetic hysteresis loss of material.If be lower than the present invention, not only be unfavorable for material K 1Reduction, but also can affect the Bs of 25 ℃ of materials.
As preferably, by accounting for the principal constituent gross weight, each component content of ancillary component is: CaCO 30.04 ~ 0.06%, ZrO 20.02 ~ 0.035%, Nb 2O 50.015 ~ 0.04%, SnO 20.1 ~ 0.2%, Co 2O 30.33 ~ 0.35%.The contriver studies discovery, Co 2O 3Content 0.33 ~ 0.35wt% can effectively reduce the K of material 1, reduce the loss of material.
As preferably, described wide temperature MnZn power ferrite material is in 25 ℃～140 ℃ temperature ranges, and the loss Pcv under the condition of 100kHz, 200mT is:
25 ℃ of power consumption≤380kW/m 3,
60 ℃ of power consumption≤330kW/m 3,
120 ℃ of power consumption≤340kW/m 3
140 ℃ of power consumption≤395kW/m 3
Bs under 1194A/m 50Hz condition is:
Bs 〉=530mT of 25 ℃
Bs 〉=420mT of 100 ℃.
The invention has the beneficial effects as follows: in the temperature range of 25 ℃ and 140 ℃, low loss characteristic is arranged, take into account simultaneously the characteristic of high Bs, can be widely used in the electronic devices and components fields such as switching mode power supply transformer, LCD illumination.
Embodiment
Below by specific embodiment, technical scheme of the present invention is described in further detail.
Among the present invention, if not refer in particular to, the raw material that adopts and equipment etc. all can be buied from market or this area is commonly used.Method among the following embodiment if no special instructions, is the ordinary method of this area.
Embodiment 1
Take by weighing principal constituent raw material: Fe by following principal constituent content 2O 3Content is that 52.7mol%, ZnO content are that 9.7mol%, MnO content are 37.6mol%, and a sand milling post-drying is also crossed 45 orders/cun sieve; Powder behind sand milling is carried out pre-burning, and calcined temperature is 860 ℃, and the time is 2 hours; (the ancillary component content by the principal constituent gross weight is: CaCO to add the ancillary component raw material that takes by weighing in proportion in Preburning material 3: 0.04wt%, ZrO 2: 0.02wt%, Nb 2O 5: 0.04wt%, SnO 2: 0.1wt% and Co 2O 3: 0.35wt%), the ratio of pellet water is 1:6:2 when carrying out secondary sand milling sand milling, and the sand milling time is 200 minutes, and the granularity of sand milling gained is 1.15 μ m; With above-mentioned secondary sand milling material oven dry and granulation, then being pressed into density under 5MPa pressure is 3.0g/cm 3The mark ring.
Comparative example 1
Take by weighing principal constituent raw material: Fe by following principal constituent content 2O 3Content is that 52.7mol%, ZnO content are that 9.7mol%, MnO content are 37.6mol%, and a sand milling post-drying is also crossed 45 orders/cun sieve; Powder behind sand milling is carried out pre-burning, and calcined temperature is 860 ℃, and the time is 2 hours; (the ancillary component content by the principal constituent gross weight is: CaCO to add the ancillary component raw material that takes by weighing in proportion in Preburning material 3: 0.04wt%, ZrO 2: 0.02wt%, Nb 2O 5: 0.04wt% and Co 2O 3: 0.35wt%), carry out the secondary sand milling, the ratio of pellet water is 1:6:2 during sand milling, and the sand milling time is 200 minutes, and the granularity of sand milling gained is 1.16 μ m; With above-mentioned secondary sand milling material oven dry and granulation, then being pressed into density under 5MPa pressure is 3.0g/cm 3The mark ring.
Mark in embodiment 1 and the comparative example 1 is encircled under the same conditions sintering, and sintering temperature is controlled at 1320 ℃, and sintering time is 5 hours, obtains desired power ferrite material.Concrete outcome sees Table 1.
Figure 2012103931010100002DEST_PATH_IMAGE002
As can be seen from Table 1, owing to do not add SnO in the comparative example 2, resistivity is descended, overall power rises.
Embodiment 2
Take by weighing principal constituent raw material: Fe by following principal constituent content 2O 3Content is that 52.8mol%, ZnO content are that 9.2mol%, MnO content are 38mol%, and a sand milling post-drying is also crossed 45 orders/cun sieve; Powder behind sand milling is carried out pre-burning, and calcined temperature is 860 ℃, and the time is 2 hours; (the ancillary component content by the principal constituent gross weight is: CaCO to add the ancillary component raw material that takes by weighing in proportion in Preburning material 3: 0.04wt%, ZrO 2: 0.03wt%, Nb 2O 5: 0.04wt%, SnO 2: 0.1wt% and Co 2O 3: 0.35wt%), the ratio of pellet water is 1:6:2 when carrying out secondary sand milling sand milling, and the sand milling time is 200 minutes, and the granularity of sand milling gained is 1.15 μ m; With above-mentioned secondary sand milling material oven dry and granulation, then being pressed into density under 5MPa pressure is 3.0g/cm 3The mark ring.
Comparative example 2
Take by weighing principal constituent raw material: Fe by following principal constituent content 2O 3Content is that 52.8mol%, ZnO content are that 9.2mol%, MnO content are 38mol%, and a sand milling post-drying is also crossed 45 orders/cun sieve; Powder behind sand milling is carried out pre-burning, and calcined temperature is 860 ℃, and the time is 2 hours; (the ancillary component content by the principal constituent gross weight is: CaCO to add the ancillary component raw material that takes by weighing in proportion in Preburning material 3: 0.04wt%, ZrO 2: 0.02wt%, Nb 2O 5: 0.04wt% and SnO 2: 0.2wt%), carry out the secondary sand milling, the ratio of pellet water is 1:6:2 during sand milling, and the sand milling time is 200 minutes, and the granularity of sand milling gained is 1.16 μ m; With above-mentioned secondary sand milling material oven dry and granulation, then being pressed into density under 5MPa pressure is 3.0g/cm 3The mark ring.
Mark in embodiment 2 and the comparative example 2 is encircled under the same conditions sintering, and sintering temperature is controlled at 1320 ℃, and sintering time is 5 hours, obtains desired power ferrite material.Concrete outcome sees Table 2.
As can be seen from Table 2, owing to do not add Co in the comparative example 2O 3So uneven on the overall power tendency, steeper, and can not effectively reduce the K of material 1Magnetic hysteresis loss is risen.
Embodiment 3
Take by weighing principal constituent raw material: Fe by following principal constituent content 2O 3Content is that 52.8mol%, ZnO content are that 9.2mol%, MnO content are 38mol%, and a sand milling post-drying is also crossed 45 orders/cun sieve; Powder behind sand milling is carried out pre-burning, and calcined temperature is 860 ℃, and the time is 2 hours; (the ancillary component content by the principal constituent gross weight is: CaCO to add the ancillary component raw material that takes by weighing in proportion in Preburning material 3: 0.04wt%, ZrO 2: 0.03wt%, Nb 2O 5: 0.04wt%, SnO 2: 0.15wt% and Co 2O 3: 0.35wt%), the ratio of pellet water is 1:6:2 when carrying out secondary sand milling sand milling, and the sand milling time is 200 minutes, and the granularity of sand milling gained is 1.15 μ m; With above-mentioned secondary sand milling material oven dry and granulation, then being pressed into density under 5MPa pressure is 3.0g/cm 3The mark ring.
Comparative example 3
Take by weighing principal constituent raw material: Fe by following principal constituent content 2O 3Content is that 53mol%, ZnO content are that 10mol%, MnO content are 37mol%, and a sand milling post-drying is also crossed 45 orders/cun sieve; Powder behind sand milling is carried out pre-burning, and calcined temperature is 860 ℃, and the time is 2 hours; (the ancillary component content by the principal constituent gross weight is: CaCO to add the ancillary component raw material that takes by weighing in proportion in Preburning material 3: 0.04wt%, ZrO 2: 0.02wt%, Nb 2O 5: 0.04wt% and SnO 2: 0.2wt%, Co 2O 3: 0.35wt%), carry out the secondary sand milling, the ratio of pellet water is 1:6:2 during sand milling, and the sand milling time is 200 minutes, and the granularity of sand milling gained is 1.17 μ m; With above-mentioned secondary sand milling material oven dry and granulation, then being pressed into density under 5MPa pressure is 3.0g/cm 3The mark ring.
Mark in embodiment 3 comparative examples 3 is encircled under the same conditions sintering, and sintering temperature is controlled at 1320 ℃, and sintering time is 5 hours, obtains desired power ferrite material.Concrete outcome sees Table 3
Figure 2012103931010100002DEST_PATH_IMAGE006
To find out, because iron level has surpassed scope of the present invention in the comparative example, reduced the resistivity of material from table 3, the loss of material is risen, ZnO content has also surpassed scope of the present invention simultaneously, has reduced to a certain extent the Bs of material.
Above-described embodiment is a kind of better scheme of the present invention, is not that the present invention is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim puts down in writing.

Claims (3)

1. one kind wide temperature MnZn power ferrite material, it is characterized in that: be comprised of principal constituent and ancillary component, the molar percentage of each component of wherein said principal constituent is: Fe 2O 3Be 52.7～52.8mol%, ZnO is 9.2～9.8mol%, the MnO surplus; Described ancillary component accounts for 0.505% ~ 0.685% of principal constituent gross weight, and described ancillary component is by CaCO 3, ZrO 2, Nb 2O 5, SnO 2And Co 2O 3Form.
2. wide temperature MnZn power ferrite material according to claim 1, it is characterized in that: by accounting for the principal constituent gross weight, each component content of ancillary component is: CaCO 30.04 ~ 0.06%, ZrO 20.02 ~ 0.035%, Nb 2O 50.015 ~ 0.04%, SnO 20.1 ~ 0.2%, Co 2O 30.33 ~ 0.35%.
3. wide temperature MnZn power ferrite material according to claim 1 and 2, it is characterized in that: described wide temperature MnZn power ferrite material is in 25 ℃～140 ℃ temperature ranges, and the loss Pcv under the condition of 100kHz, 200mT is:
25 ℃ of power consumption≤380kW/m 3,
60 ℃ of power consumption≤330kW/m 3,
120 ℃ of power consumption≤340kW/m 3
140 ℃ of power consumption≤395kW/m 3
Bs under 1194A/m 50Hz condition is:
Bs 〉=530mT of 25 ℃
Bs 〉=420mT of 100 ℃.
CN2012103931010A 2012-10-17 2012-10-17 Wide-temperature MnZn power ferrite material Pending CN102964117A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103601504A (en) * 2013-11-14 2014-02-26 江苏省晶石磁性材料与器件工程技术研究有限公司 Powder for preventing manganese-zinc ferrite from adhesion and deformation in sintering process
WO2022205537A1 (en) * 2021-03-30 2022-10-06 横店集团东磁股份有限公司 Manganese zinc ferrite, preparation method therefor and use thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1697094A (en) * 2005-05-30 2005-11-16 苏州冠达磁业有限公司 Ferrite magnet material of manganese-zinc, and Method for preparing high conductive ferrite of manganese-zinc from material
CN1750182A (en) * 2004-09-13 2006-03-22 广东风华高新科技集团有限公司 Nickel-zinc soft magnet ferrite material, inductor product and its producing method
CN102693803A (en) * 2012-02-23 2012-09-26 横店集团东磁股份有限公司 Wide-temperature and low-loss MnZn power ferrite and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1750182A (en) * 2004-09-13 2006-03-22 广东风华高新科技集团有限公司 Nickel-zinc soft magnet ferrite material, inductor product and its producing method
CN1697094A (en) * 2005-05-30 2005-11-16 苏州冠达磁业有限公司 Ferrite magnet material of manganese-zinc, and Method for preparing high conductive ferrite of manganese-zinc from material
CN102693803A (en) * 2012-02-23 2012-09-26 横店集团东磁股份有限公司 Wide-temperature and low-loss MnZn power ferrite and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103601504A (en) * 2013-11-14 2014-02-26 江苏省晶石磁性材料与器件工程技术研究有限公司 Powder for preventing manganese-zinc ferrite from adhesion and deformation in sintering process
CN103601504B (en) * 2013-11-14 2015-03-18 江苏省晶石磁性材料与器件工程技术研究有限公司 Powder for preventing manganese-zinc ferrite from adhesion and deformation in sintering process
WO2022205537A1 (en) * 2021-03-30 2022-10-06 横店集团东磁股份有限公司 Manganese zinc ferrite, preparation method therefor and use thereof

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Application publication date: 20130313